Title:
Use of Ground-penetrating Radar to Characterize Hydrostratigraphic Units Within a Georgia Coastal Plain Province
Use of Ground-penetrating Radar to Characterize Hydrostratigraphic Units Within a Georgia Coastal Plain Province
Author(s)
Feild, James B.
Johnson, West W.
Sermon, Nina
Burkingstock, Bryan K.
Dowd, John F.
Garrison, Ervan G.
Bush, Parshall B.
Johnson, West W.
Sermon, Nina
Burkingstock, Bryan K.
Dowd, John F.
Garrison, Ervan G.
Bush, Parshall B.
Advisor(s)
Editor(s)
Hatcher, Kathryn J.
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Abstract
The fate of pesticides/herbicides in a watershed
depends upon important hydrologic pathways. In the Coastal
Plain of Georgia, the presence and extent of semi-confining
lithologic layers dictates the potential for contaminant movement
into the local water table. This study used ground penetrating
radar to characterize subsurface hydrostratigraphic units on a
Coastal Plain study site. Groundwater monitoring wells were installed at various
locations at the site, and soil samples were collected and
described. The site lithology is characterized by a fine grained
quartz sand which is underlain by a clay-rich indurated sandy
loam (CRISL). These soil samples are only point descriptions
and do not describe the continuity of the layer. Therefore, ground
penetrating radar was utilized to map the lithological features of
the CRISL and determine the continuity of this layer.
Analysis of the ground penetrating radar data suggests the
CRISL (semi-confining layer) is discontinuous, and the
discontinuity is elongated at the region along the ephemeral
stream that drains the watershed. This geometry may be used to
accurately illustrate unsaturated/saturated flow in a contaminant
transport model.
Sponsor
Sponsored and Organized by: U.S. Geological Survey, Georgia Department of Natural Resources, The University of Georgia, Georgia State University, Georgia Institute of Technology
Date Issued
1997-03
Extent
Resource Type
Text
Resource Subtype
Proceedings